lantiq: update spi driver to upstream version
These patches are backported from upstream Linux kernel. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
parent
fb7ea71c15
commit
6c1657623f
5 changed files with 855 additions and 82 deletions
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@ -166,7 +166,7 @@
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spi: spi@100D00 {
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status = "disabled";
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compatible = "intel,falcon-spi", "intel,xrx100-spi", "lantiq,spi-lantiq-ssc";
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compatible = "lantiq,falcon-spi", "lantiq,xrx100-spi", "lantiq,spi-lantiq-ssc";
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interrupts = <22 23 24 25>;
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interrupt-names = "spi_tx", "spi_rx", "spi_err", "spi_frm";
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#address-cells = <1>;
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@ -1,42 +0,0 @@
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--- a/drivers/spi/spi.c
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+++ b/drivers/spi/spi.c
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@@ -1013,6 +1013,20 @@ static int spi_transfer_one_message(stru
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msecs_to_jiffies(ms));
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}
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+ if (master->transfer_status) {
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+ ret = master->transfer_status(master, ms);
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+ if (ret) {
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+ SPI_STATISTICS_INCREMENT_FIELD(statm,
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+ errors);
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+ SPI_STATISTICS_INCREMENT_FIELD(stats,
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+ errors);
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+ dev_err(&msg->spi->dev,
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+ "SPI transfer status: %d\n",
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+ ret);
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+ goto out;
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+ }
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+ }
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+
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if (ms == 0) {
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SPI_STATISTICS_INCREMENT_FIELD(statm,
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timedout);
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--- a/include/linux/spi/spi.h
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+++ b/include/linux/spi/spi.h
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@@ -370,6 +370,8 @@ static inline void spi_unregister_driver
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* transfer_one_message are mutually exclusive; when both
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* are set, the generic subsystem does not call your
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* transfer_one callback.
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+ * @transfer_status: This callback allows the driver to return an error code
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+ * in case the scheduled single spi transfer failed.
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* @handle_err: the subsystem calls the driver to handle an error that occurs
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* in the generic implementation of transfer_one_message().
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* @unprepare_message: undo any work done by prepare_message().
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@@ -546,6 +548,7 @@ struct spi_master {
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void (*set_cs)(struct spi_device *spi, bool enable);
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int (*transfer_one)(struct spi_master *master, struct spi_device *spi,
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struct spi_transfer *transfer);
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+ int (*transfer_status)(struct spi_master *master, unsigned long timeout);
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void (*handle_err)(struct spi_master *master,
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struct spi_message *message);
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@ -1,3 +1,36 @@
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From 941ab0bc001fe24e5f8ce88eed27f2a1b89f3e20 Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Tue, 14 Feb 2017 00:31:11 +0100
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Subject: spi: lantiq-ssc: add support for Lantiq SSC SPI controller
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This driver supports the Lantiq SSC SPI controller in master
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mode. This controller is found on Intel (former Lantiq) SoCs like
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the Danube, Falcon, xRX200, xRX300.
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The hardware uses two hardware FIFOs one for received and one for
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transferred bytes. When the driver writes data into the transmit FIFO
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the complete word is taken from the FIFO into a shift register. The
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data from this shift register is then written to the wire. This driver
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uses the interrupts signaling the status of the FIFOs and not the shift
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register. It is also possible to use the interrupts for the shift
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register, but they will send a signal after every word. When using the
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interrupts for the shift register we get a signal when the last word is
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written into the shift register and not when it is written to the wire.
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After all FIFOs are empty the driver busy waits till the hardware is
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not busy any more and returns the transfer status.
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Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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.../devicetree/bindings/spi/spi-lantiq-ssc.txt | 29 +
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drivers/spi/Kconfig | 8 +
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drivers/spi/Makefile | 1 +
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drivers/spi/spi-lantiq-ssc.c | 983 +++++++++++++++++++++
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4 files changed, 1021 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/spi/spi-lantiq-ssc.txt
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create mode 100644 drivers/spi/spi-lantiq-ssc.c
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/spi/spi-lantiq-ssc.txt
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@@ -0,0 +1,29 @@
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@ -59,7 +92,7 @@
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obj-$(CONFIG_SPI_LP8841_RTC) += spi-lp8841-rtc.o
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--- /dev/null
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+++ b/drivers/spi/spi-lantiq-ssc.c
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@@ -0,0 +1,952 @@
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@@ -0,0 +1,983 @@
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+/*
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+ * Copyright (C) 2011-2015 Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
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+ * Copyright (C) 2016 Hauke Mehrtens <hauke@hauke-m.de>
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@ -84,7 +117,9 @@
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+#include <linux/pm_runtime.h>
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+#include <linux/spi/spi.h>
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+
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+#ifdef CONFIG_LANTIQ
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+#include <lantiq_soc.h>
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+#endif
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+
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+#define SPI_RX_IRQ_NAME "spi_rx"
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+#define SPI_TX_IRQ_NAME "spi_tx"
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@ -231,6 +266,8 @@
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+ const struct lantiq_ssc_hwcfg *hwcfg;
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+
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+ spinlock_t lock;
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+ struct workqueue_struct *wq;
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+ struct work_struct work;
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+
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+ const u8 *tx;
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+ u8 *rx;
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@ -238,7 +275,6 @@
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+ unsigned int rx_todo;
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+ unsigned int bits_per_word;
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+ unsigned int speed_hz;
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+ int status;
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+ unsigned int tx_fifo_size;
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+ unsigned int rx_fifo_size;
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+ unsigned int base_cs;
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@ -520,6 +556,8 @@
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+{
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+ struct lantiq_ssc_spi *spi = spi_master_get_devdata(master);
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+
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+ flush_workqueue(spi->wq);
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+
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+ /* Disable transmitter and receiver while idle */
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+ lantiq_ssc_maskl(spi, 0, SPI_CON_TXOFF | SPI_CON_RXOFF, SPI_CON);
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+
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@ -691,8 +729,7 @@
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+ return IRQ_HANDLED;
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+
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+completed:
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+ spi->status = 0;
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+ spi_finalize_current_transfer(spi->master);
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+ queue_work(spi->wq, &spi->work);
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+
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+ return IRQ_HANDLED;
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+}
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@ -722,8 +759,9 @@
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+ lantiq_ssc_maskl(spi, 0, SPI_WHBSTATE_CLR_ERRORS, SPI_WHBSTATE);
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+
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+ /* set bad status so it can be retried */
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+ spi->status = -EIO;
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+ spi_finalize_current_transfer(spi->master);
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+ if (spi->master->cur_msg)
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+ spi->master->cur_msg->status = -EIO;
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+ queue_work(spi->wq, &spi->work);
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+
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+ return IRQ_HANDLED;
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+}
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@ -737,7 +775,6 @@
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+
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+ spi->tx = t->tx_buf;
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+ spi->rx = t->rx_buf;
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+ spi->status = -EINPROGRESS;
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+
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+ if (t->tx_buf) {
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+ spi->tx_todo = t->len;
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@ -759,12 +796,6 @@
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+ return t->len;
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+}
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+
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+static int lantiq_ssc_transfer_status(struct spi_master *master,
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+ unsigned long timeout)
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+{
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+ struct lantiq_ssc_spi *spi = spi_master_get_devdata(master);
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+ unsigned long end;
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+
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+/*
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+ * The driver only gets an interrupt when the FIFO is empty, but there
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+ * is an additional shift register from which the data is written to
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@ -772,17 +803,32 @@
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+ * write the last word to the wire, not when it is finished. Do busy
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+ * waiting till it finishes.
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+ */
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+ end = jiffies + timeout;
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+static void lantiq_ssc_bussy_work(struct work_struct *work)
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+{
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+ struct lantiq_ssc_spi *spi;
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+ unsigned long long timeout = 8LL * 1000LL;
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+ unsigned long end;
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+
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+ spi = container_of(work, typeof(*spi), work);
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+
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+ do_div(timeout, spi->speed_hz);
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+ timeout += timeout + 100; /* some tolerance */
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+
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+ end = jiffies + msecs_to_jiffies(timeout);
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+ do {
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+ u32 stat = lantiq_ssc_readl(spi, SPI_STAT);
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+
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+ if (!(stat & SPI_STAT_BSY))
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+ return spi->status;
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+ if (!(stat & SPI_STAT_BSY)) {
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+ spi_finalize_current_transfer(spi->master);
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+ return;
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+ }
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+
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+ cond_resched();
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+ } while (!time_after_eq(jiffies, end));
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+
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+ return -ETIMEDOUT;
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+ if (spi->master->cur_msg)
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+ spi->master->cur_msg->status = -EIO;
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+ spi_finalize_current_transfer(spi->master);
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+}
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+
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+static void lantiq_ssc_handle_err(struct spi_master *master,
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@ -840,6 +886,7 @@
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+
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+static int lantiq_ssc_probe(struct platform_device *pdev)
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+{
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+ struct device *dev = &pdev->dev;
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+ struct spi_master *master;
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+ struct resource *res;
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+ struct lantiq_ssc_spi *spi;
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@ -849,69 +896,69 @@
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+ u32 id, supports_dma, revision;
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+ unsigned int num_cs;
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+
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+ match = of_match_device(lantiq_ssc_match, &pdev->dev);
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+ match = of_match_device(lantiq_ssc_match, dev);
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+ if (!match) {
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+ dev_err(&pdev->dev, "no device match\n");
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+ dev_err(dev, "no device match\n");
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+ return -EINVAL;
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+ }
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+ hwcfg = match->data;
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+
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+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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+ if (!res) {
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+ dev_err(&pdev->dev, "failed to get resources\n");
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+ dev_err(dev, "failed to get resources\n");
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+ return -ENXIO;
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+ }
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+
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+ rx_irq = platform_get_irq_byname(pdev, SPI_RX_IRQ_NAME);
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+ if (rx_irq < 0) {
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+ dev_err(&pdev->dev, "failed to get %s\n", SPI_RX_IRQ_NAME);
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+ dev_err(dev, "failed to get %s\n", SPI_RX_IRQ_NAME);
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+ return -ENXIO;
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+ }
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+
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+ tx_irq = platform_get_irq_byname(pdev, SPI_TX_IRQ_NAME);
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+ if (tx_irq < 0) {
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+ dev_err(&pdev->dev, "failed to get %s\n", SPI_TX_IRQ_NAME);
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+ dev_err(dev, "failed to get %s\n", SPI_TX_IRQ_NAME);
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+ return -ENXIO;
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+ }
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+
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+ err_irq = platform_get_irq_byname(pdev, SPI_ERR_IRQ_NAME);
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+ if (err_irq < 0) {
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+ dev_err(&pdev->dev, "failed to get %s\n", SPI_ERR_IRQ_NAME);
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+ dev_err(dev, "failed to get %s\n", SPI_ERR_IRQ_NAME);
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+ return -ENXIO;
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+ }
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+
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+ master = spi_alloc_master(&pdev->dev, sizeof(struct lantiq_ssc_spi));
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+ master = spi_alloc_master(dev, sizeof(struct lantiq_ssc_spi));
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+ if (!master)
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+ return -ENOMEM;
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+
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+ spi = spi_master_get_devdata(master);
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+ spi->master = master;
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+ spi->dev = &pdev->dev;
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+ spi->dev = dev;
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+ spi->hwcfg = hwcfg;
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+ platform_set_drvdata(pdev, spi);
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+
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+ spi->regbase = devm_ioremap_resource(&pdev->dev, res);
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+ spi->regbase = devm_ioremap_resource(dev, res);
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+ if (IS_ERR(spi->regbase)) {
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+ err = PTR_ERR(spi->regbase);
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+ goto err_master_put;
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+ }
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+
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+ err = devm_request_irq(&pdev->dev, rx_irq, lantiq_ssc_xmit_interrupt,
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+ err = devm_request_irq(dev, rx_irq, lantiq_ssc_xmit_interrupt,
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+ 0, SPI_RX_IRQ_NAME, spi);
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+ if (err)
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+ goto err_master_put;
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+
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+ err = devm_request_irq(&pdev->dev, tx_irq, lantiq_ssc_xmit_interrupt,
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+ err = devm_request_irq(dev, tx_irq, lantiq_ssc_xmit_interrupt,
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+ 0, SPI_TX_IRQ_NAME, spi);
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+ if (err)
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+ goto err_master_put;
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+
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+ err = devm_request_irq(&pdev->dev, err_irq, lantiq_ssc_err_interrupt,
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+ err = devm_request_irq(dev, err_irq, lantiq_ssc_err_interrupt,
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+ 0, SPI_ERR_IRQ_NAME, spi);
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+ if (err)
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+ goto err_master_put;
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+
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+ spi->spi_clk = devm_clk_get(&pdev->dev, NULL);
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+ spi->spi_clk = devm_clk_get(dev, "gate");
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+ if (IS_ERR(spi->spi_clk)) {
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+ err = PTR_ERR(spi->spi_clk);
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+ goto err_master_put;
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@ -920,7 +967,15 @@
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+ if (err)
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+ goto err_master_put;
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+
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+ /*
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+ * Use the old clk_get_fpi() function on Lantiq platform, till it
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+ * supports common clk.
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+ */
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+#if defined(CONFIG_LANTIQ) && !defined(CONFIG_COMMON_CLK)
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+ spi->fpi_clk = clk_get_fpi();
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+#else
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+ spi->fpi_clk = clk_get(dev, "freq");
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+#endif
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+ if (IS_ERR(spi->fpi_clk)) {
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+ err = PTR_ERR(spi->fpi_clk);
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+ goto err_clk_disable;
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@ -944,12 +999,18 @@
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+ master->prepare_message = lantiq_ssc_prepare_message;
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+ master->unprepare_message = lantiq_ssc_unprepare_message;
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+ master->transfer_one = lantiq_ssc_transfer_one;
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+ master->transfer_status = lantiq_ssc_transfer_status;
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+ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST | SPI_CS_HIGH |
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+ SPI_LOOP;
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+ master->bits_per_word_mask = SPI_BPW_RANGE_MASK(2, 8) |
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+ SPI_BPW_MASK(16) | SPI_BPW_MASK(32);
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+
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+ spi->wq = alloc_ordered_workqueue(dev_name(dev), 0);
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+ if (!spi->wq) {
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+ err = -ENOMEM;
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+ goto err_clk_put;
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+ }
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+ INIT_WORK(&spi->work, lantiq_ssc_bussy_work);
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+
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+ id = lantiq_ssc_readl(spi, SPI_ID);
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+ spi->tx_fifo_size = (id & SPI_ID_TXFS_M) >> SPI_ID_TXFS_S;
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+ spi->rx_fifo_size = (id & SPI_ID_RXFS_M) >> SPI_ID_RXFS_S;
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@ -958,18 +1019,20 @@
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+
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+ lantiq_ssc_hw_init(spi);
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+
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+ dev_info(&pdev->dev,
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+ dev_info(dev,
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+ "Lantiq SSC SPI controller (Rev %i, TXFS %u, RXFS %u, DMA %u)\n",
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+ revision, spi->tx_fifo_size, spi->rx_fifo_size, supports_dma);
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+
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+ err = devm_spi_register_master(&pdev->dev, master);
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+ err = devm_spi_register_master(dev, master);
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+ if (err) {
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+ dev_err(&pdev->dev, "failed to register spi_master\n");
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+ goto err_clk_put;
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+ dev_err(dev, "failed to register spi_master\n");
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+ goto err_wq_destroy;
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+ }
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+
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+ return 0;
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+
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+err_wq_destroy:
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+ destroy_workqueue(spi->wq);
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+err_clk_put:
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+ clk_put(spi->fpi_clk);
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+err_clk_disable:
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@ -990,6 +1053,7 @@
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+ tx_fifo_flush(spi);
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+ hw_enter_config_mode(spi);
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+
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+ destroy_workqueue(spi->wq);
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+ clk_disable_unprepare(spi->spi_clk);
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+ clk_put(spi->fpi_clk);
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+
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@ -0,0 +1,28 @@
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From ba6e1e39969fa5435127a632757e2906caca7730 Mon Sep 17 00:00:00 2001
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From: kbuild test robot <fengguang.wu@intel.com>
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Date: Mon, 20 Feb 2017 01:33:10 +0800
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Subject: spi: lantiq-ssc: fix platform_no_drv_owner.cocci warnings
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drivers/spi/spi-lantiq-ssc.c:973:3-8: No need to set .owner here. The core will do it.
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Remove .owner field if calls are used which set it automatically
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Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
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Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
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Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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drivers/spi/spi-lantiq-ssc.c | 1 -
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1 file changed, 1 deletion(-)
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--- a/drivers/spi/spi-lantiq-ssc.c
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+++ b/drivers/spi/spi-lantiq-ssc.c
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@@ -970,7 +970,6 @@ static struct platform_driver lantiq_ssc
|
||||
.remove = lantiq_ssc_remove,
|
||||
.driver = {
|
||||
.name = "spi-lantiq-ssc",
|
||||
- .owner = THIS_MODULE,
|
||||
.of_match_table = lantiq_ssc_match,
|
||||
},
|
||||
};
|
|
@ -0,0 +1,723 @@
|
|||
From 1aa83e0a2821cd7f4e8f3ddb367859f52e468bf1 Mon Sep 17 00:00:00 2001
|
||||
From: Hauke Mehrtens <hauke@hauke-m.de>
|
||||
Date: Mon, 27 Feb 2017 23:21:25 +0100
|
||||
Subject: spi: lantiq-ssc: add LTQ_ prefix to defines
|
||||
|
||||
The blackfin architecture has a SPI_STAT define which conflicts with
|
||||
the define from the spi-lantiq-ssc driver in compile test mode. Fix
|
||||
this by adding a prefix in front of every define.
|
||||
|
||||
Reported-by: kbuild test robot <fengguang.wu@intel.com>
|
||||
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
|
||||
Signed-off-by: Mark Brown <broonie@kernel.org>
|
||||
---
|
||||
drivers/spi/spi-lantiq-ssc.c | 437 ++++++++++++++++++++++---------------------
|
||||
1 file changed, 222 insertions(+), 215 deletions(-)
|
||||
|
||||
--- a/drivers/spi/spi-lantiq-ssc.c
|
||||
+++ b/drivers/spi/spi-lantiq-ssc.c
|
||||
@@ -26,136 +26,140 @@
|
||||
#include <lantiq_soc.h>
|
||||
#endif
|
||||
|
||||
-#define SPI_RX_IRQ_NAME "spi_rx"
|
||||
-#define SPI_TX_IRQ_NAME "spi_tx"
|
||||
-#define SPI_ERR_IRQ_NAME "spi_err"
|
||||
-#define SPI_FRM_IRQ_NAME "spi_frm"
|
||||
-
|
||||
-#define SPI_CLC 0x00
|
||||
-#define SPI_PISEL 0x04
|
||||
-#define SPI_ID 0x08
|
||||
-#define SPI_CON 0x10
|
||||
-#define SPI_STAT 0x14
|
||||
-#define SPI_WHBSTATE 0x18
|
||||
-#define SPI_TB 0x20
|
||||
-#define SPI_RB 0x24
|
||||
-#define SPI_RXFCON 0x30
|
||||
-#define SPI_TXFCON 0x34
|
||||
-#define SPI_FSTAT 0x38
|
||||
-#define SPI_BRT 0x40
|
||||
-#define SPI_BRSTAT 0x44
|
||||
-#define SPI_SFCON 0x60
|
||||
-#define SPI_SFSTAT 0x64
|
||||
-#define SPI_GPOCON 0x70
|
||||
-#define SPI_GPOSTAT 0x74
|
||||
-#define SPI_FPGO 0x78
|
||||
-#define SPI_RXREQ 0x80
|
||||
-#define SPI_RXCNT 0x84
|
||||
-#define SPI_DMACON 0xec
|
||||
-#define SPI_IRNEN 0xf4
|
||||
-#define SPI_IRNICR 0xf8
|
||||
-#define SPI_IRNCR 0xfc
|
||||
-
|
||||
-#define SPI_CLC_SMC_S 16 /* Clock divider for sleep mode */
|
||||
-#define SPI_CLC_SMC_M (0xFF << SPI_CLC_SMC_S)
|
||||
-#define SPI_CLC_RMC_S 8 /* Clock divider for normal run mode */
|
||||
-#define SPI_CLC_RMC_M (0xFF << SPI_CLC_RMC_S)
|
||||
-#define SPI_CLC_DISS BIT(1) /* Disable status bit */
|
||||
-#define SPI_CLC_DISR BIT(0) /* Disable request bit */
|
||||
-
|
||||
-#define SPI_ID_TXFS_S 24 /* Implemented TX FIFO size */
|
||||
-#define SPI_ID_TXFS_M (0x3F << SPI_ID_TXFS_S)
|
||||
-#define SPI_ID_RXFS_S 16 /* Implemented RX FIFO size */
|
||||
-#define SPI_ID_RXFS_M (0x3F << SPI_ID_RXFS_S)
|
||||
-#define SPI_ID_MOD_S 8 /* Module ID */
|
||||
-#define SPI_ID_MOD_M (0xff << SPI_ID_MOD_S)
|
||||
-#define SPI_ID_CFG_S 5 /* DMA interface support */
|
||||
-#define SPI_ID_CFG_M (1 << SPI_ID_CFG_S)
|
||||
-#define SPI_ID_REV_M 0x1F /* Hardware revision number */
|
||||
-
|
||||
-#define SPI_CON_BM_S 16 /* Data width selection */
|
||||
-#define SPI_CON_BM_M (0x1F << SPI_CON_BM_S)
|
||||
-#define SPI_CON_EM BIT(24) /* Echo mode */
|
||||
-#define SPI_CON_IDLE BIT(23) /* Idle bit value */
|
||||
-#define SPI_CON_ENBV BIT(22) /* Enable byte valid control */
|
||||
-#define SPI_CON_RUEN BIT(12) /* Receive underflow error enable */
|
||||
-#define SPI_CON_TUEN BIT(11) /* Transmit underflow error enable */
|
||||
-#define SPI_CON_AEN BIT(10) /* Abort error enable */
|
||||
-#define SPI_CON_REN BIT(9) /* Receive overflow error enable */
|
||||
-#define SPI_CON_TEN BIT(8) /* Transmit overflow error enable */
|
||||
-#define SPI_CON_LB BIT(7) /* Loopback control */
|
||||
-#define SPI_CON_PO BIT(6) /* Clock polarity control */
|
||||
-#define SPI_CON_PH BIT(5) /* Clock phase control */
|
||||
-#define SPI_CON_HB BIT(4) /* Heading control */
|
||||
-#define SPI_CON_RXOFF BIT(1) /* Switch receiver off */
|
||||
-#define SPI_CON_TXOFF BIT(0) /* Switch transmitter off */
|
||||
-
|
||||
-#define SPI_STAT_RXBV_S 28
|
||||
-#define SPI_STAT_RXBV_M (0x7 << SPI_STAT_RXBV_S)
|
||||
-#define SPI_STAT_BSY BIT(13) /* Busy flag */
|
||||
-#define SPI_STAT_RUE BIT(12) /* Receive underflow error flag */
|
||||
-#define SPI_STAT_TUE BIT(11) /* Transmit underflow error flag */
|
||||
-#define SPI_STAT_AE BIT(10) /* Abort error flag */
|
||||
-#define SPI_STAT_RE BIT(9) /* Receive error flag */
|
||||
-#define SPI_STAT_TE BIT(8) /* Transmit error flag */
|
||||
-#define SPI_STAT_ME BIT(7) /* Mode error flag */
|
||||
-#define SPI_STAT_MS BIT(1) /* Master/slave select bit */
|
||||
-#define SPI_STAT_EN BIT(0) /* Enable bit */
|
||||
-#define SPI_STAT_ERRORS (SPI_STAT_ME | SPI_STAT_TE | SPI_STAT_RE | \
|
||||
- SPI_STAT_AE | SPI_STAT_TUE | SPI_STAT_RUE)
|
||||
-
|
||||
-#define SPI_WHBSTATE_SETTUE BIT(15) /* Set transmit underflow error flag */
|
||||
-#define SPI_WHBSTATE_SETAE BIT(14) /* Set abort error flag */
|
||||
-#define SPI_WHBSTATE_SETRE BIT(13) /* Set receive error flag */
|
||||
-#define SPI_WHBSTATE_SETTE BIT(12) /* Set transmit error flag */
|
||||
-#define SPI_WHBSTATE_CLRTUE BIT(11) /* Clear transmit underflow error flag */
|
||||
-#define SPI_WHBSTATE_CLRAE BIT(10) /* Clear abort error flag */
|
||||
-#define SPI_WHBSTATE_CLRRE BIT(9) /* Clear receive error flag */
|
||||
-#define SPI_WHBSTATE_CLRTE BIT(8) /* Clear transmit error flag */
|
||||
-#define SPI_WHBSTATE_SETME BIT(7) /* Set mode error flag */
|
||||
-#define SPI_WHBSTATE_CLRME BIT(6) /* Clear mode error flag */
|
||||
-#define SPI_WHBSTATE_SETRUE BIT(5) /* Set receive underflow error flag */
|
||||
-#define SPI_WHBSTATE_CLRRUE BIT(4) /* Clear receive underflow error flag */
|
||||
-#define SPI_WHBSTATE_SETMS BIT(3) /* Set master select bit */
|
||||
-#define SPI_WHBSTATE_CLRMS BIT(2) /* Clear master select bit */
|
||||
-#define SPI_WHBSTATE_SETEN BIT(1) /* Set enable bit (operational mode) */
|
||||
-#define SPI_WHBSTATE_CLREN BIT(0) /* Clear enable bit (config mode */
|
||||
-#define SPI_WHBSTATE_CLR_ERRORS (SPI_WHBSTATE_CLRRUE | SPI_WHBSTATE_CLRME | \
|
||||
- SPI_WHBSTATE_CLRTE | SPI_WHBSTATE_CLRRE | \
|
||||
- SPI_WHBSTATE_CLRAE | SPI_WHBSTATE_CLRTUE)
|
||||
-
|
||||
-#define SPI_RXFCON_RXFITL_S 8 /* FIFO interrupt trigger level */
|
||||
-#define SPI_RXFCON_RXFITL_M (0x3F << SPI_RXFCON_RXFITL_S)
|
||||
-#define SPI_RXFCON_RXFLU BIT(1) /* FIFO flush */
|
||||
-#define SPI_RXFCON_RXFEN BIT(0) /* FIFO enable */
|
||||
-
|
||||
-#define SPI_TXFCON_TXFITL_S 8 /* FIFO interrupt trigger level */
|
||||
-#define SPI_TXFCON_TXFITL_M (0x3F << SPI_TXFCON_TXFITL_S)
|
||||
-#define SPI_TXFCON_TXFLU BIT(1) /* FIFO flush */
|
||||
-#define SPI_TXFCON_TXFEN BIT(0) /* FIFO enable */
|
||||
-
|
||||
-#define SPI_FSTAT_RXFFL_S 0
|
||||
-#define SPI_FSTAT_RXFFL_M (0x3f << SPI_FSTAT_RXFFL_S)
|
||||
-#define SPI_FSTAT_TXFFL_S 8
|
||||
-#define SPI_FSTAT_TXFFL_M (0x3f << SPI_FSTAT_TXFFL_S)
|
||||
-
|
||||
-#define SPI_GPOCON_ISCSBN_S 8
|
||||
-#define SPI_GPOCON_INVOUTN_S 0
|
||||
-
|
||||
-#define SPI_FGPO_SETOUTN_S 8
|
||||
-#define SPI_FGPO_CLROUTN_S 0
|
||||
-
|
||||
-#define SPI_RXREQ_RXCNT_M 0xFFFF /* Receive count value */
|
||||
-#define SPI_RXCNT_TODO_M 0xFFFF /* Recevie to-do value */
|
||||
-
|
||||
-#define SPI_IRNEN_TFI BIT(4) /* TX finished interrupt */
|
||||
-#define SPI_IRNEN_F BIT(3) /* Frame end interrupt request */
|
||||
-#define SPI_IRNEN_E BIT(2) /* Error end interrupt request */
|
||||
-#define SPI_IRNEN_T_XWAY BIT(1) /* Transmit end interrupt request */
|
||||
-#define SPI_IRNEN_R_XWAY BIT(0) /* Receive end interrupt request */
|
||||
-#define SPI_IRNEN_R_XRX BIT(1) /* Transmit end interrupt request */
|
||||
-#define SPI_IRNEN_T_XRX BIT(0) /* Receive end interrupt request */
|
||||
-#define SPI_IRNEN_ALL 0x1F
|
||||
+#define LTQ_SPI_RX_IRQ_NAME "spi_rx"
|
||||
+#define LTQ_SPI_TX_IRQ_NAME "spi_tx"
|
||||
+#define LTQ_SPI_ERR_IRQ_NAME "spi_err"
|
||||
+#define LTQ_SPI_FRM_IRQ_NAME "spi_frm"
|
||||
+
|
||||
+#define LTQ_SPI_CLC 0x00
|
||||
+#define LTQ_SPI_PISEL 0x04
|
||||
+#define LTQ_SPI_ID 0x08
|
||||
+#define LTQ_SPI_CON 0x10
|
||||
+#define LTQ_SPI_STAT 0x14
|
||||
+#define LTQ_SPI_WHBSTATE 0x18
|
||||
+#define LTQ_SPI_TB 0x20
|
||||
+#define LTQ_SPI_RB 0x24
|
||||
+#define LTQ_SPI_RXFCON 0x30
|
||||
+#define LTQ_SPI_TXFCON 0x34
|
||||
+#define LTQ_SPI_FSTAT 0x38
|
||||
+#define LTQ_SPI_BRT 0x40
|
||||
+#define LTQ_SPI_BRSTAT 0x44
|
||||
+#define LTQ_SPI_SFCON 0x60
|
||||
+#define LTQ_SPI_SFSTAT 0x64
|
||||
+#define LTQ_SPI_GPOCON 0x70
|
||||
+#define LTQ_SPI_GPOSTAT 0x74
|
||||
+#define LTQ_SPI_FPGO 0x78
|
||||
+#define LTQ_SPI_RXREQ 0x80
|
||||
+#define LTQ_SPI_RXCNT 0x84
|
||||
+#define LTQ_SPI_DMACON 0xec
|
||||
+#define LTQ_SPI_IRNEN 0xf4
|
||||
+#define LTQ_SPI_IRNICR 0xf8
|
||||
+#define LTQ_SPI_IRNCR 0xfc
|
||||
+
|
||||
+#define LTQ_SPI_CLC_SMC_S 16 /* Clock divider for sleep mode */
|
||||
+#define LTQ_SPI_CLC_SMC_M (0xFF << LTQ_SPI_CLC_SMC_S)
|
||||
+#define LTQ_SPI_CLC_RMC_S 8 /* Clock divider for normal run mode */
|
||||
+#define LTQ_SPI_CLC_RMC_M (0xFF << LTQ_SPI_CLC_RMC_S)
|
||||
+#define LTQ_SPI_CLC_DISS BIT(1) /* Disable status bit */
|
||||
+#define LTQ_SPI_CLC_DISR BIT(0) /* Disable request bit */
|
||||
+
|
||||
+#define LTQ_SPI_ID_TXFS_S 24 /* Implemented TX FIFO size */
|
||||
+#define LTQ_SPI_ID_TXFS_M (0x3F << LTQ_SPI_ID_TXFS_S)
|
||||
+#define LTQ_SPI_ID_RXFS_S 16 /* Implemented RX FIFO size */
|
||||
+#define LTQ_SPI_ID_RXFS_M (0x3F << LTQ_SPI_ID_RXFS_S)
|
||||
+#define LTQ_SPI_ID_MOD_S 8 /* Module ID */
|
||||
+#define LTQ_SPI_ID_MOD_M (0xff << LTQ_SPI_ID_MOD_S)
|
||||
+#define LTQ_SPI_ID_CFG_S 5 /* DMA interface support */
|
||||
+#define LTQ_SPI_ID_CFG_M (1 << LTQ_SPI_ID_CFG_S)
|
||||
+#define LTQ_SPI_ID_REV_M 0x1F /* Hardware revision number */
|
||||
+
|
||||
+#define LTQ_SPI_CON_BM_S 16 /* Data width selection */
|
||||
+#define LTQ_SPI_CON_BM_M (0x1F << LTQ_SPI_CON_BM_S)
|
||||
+#define LTQ_SPI_CON_EM BIT(24) /* Echo mode */
|
||||
+#define LTQ_SPI_CON_IDLE BIT(23) /* Idle bit value */
|
||||
+#define LTQ_SPI_CON_ENBV BIT(22) /* Enable byte valid control */
|
||||
+#define LTQ_SPI_CON_RUEN BIT(12) /* Receive underflow error enable */
|
||||
+#define LTQ_SPI_CON_TUEN BIT(11) /* Transmit underflow error enable */
|
||||
+#define LTQ_SPI_CON_AEN BIT(10) /* Abort error enable */
|
||||
+#define LTQ_SPI_CON_REN BIT(9) /* Receive overflow error enable */
|
||||
+#define LTQ_SPI_CON_TEN BIT(8) /* Transmit overflow error enable */
|
||||
+#define LTQ_SPI_CON_LB BIT(7) /* Loopback control */
|
||||
+#define LTQ_SPI_CON_PO BIT(6) /* Clock polarity control */
|
||||
+#define LTQ_SPI_CON_PH BIT(5) /* Clock phase control */
|
||||
+#define LTQ_SPI_CON_HB BIT(4) /* Heading control */
|
||||
+#define LTQ_SPI_CON_RXOFF BIT(1) /* Switch receiver off */
|
||||
+#define LTQ_SPI_CON_TXOFF BIT(0) /* Switch transmitter off */
|
||||
+
|
||||
+#define LTQ_SPI_STAT_RXBV_S 28
|
||||
+#define LTQ_SPI_STAT_RXBV_M (0x7 << LTQ_SPI_STAT_RXBV_S)
|
||||
+#define LTQ_SPI_STAT_BSY BIT(13) /* Busy flag */
|
||||
+#define LTQ_SPI_STAT_RUE BIT(12) /* Receive underflow error flag */
|
||||
+#define LTQ_SPI_STAT_TUE BIT(11) /* Transmit underflow error flag */
|
||||
+#define LTQ_SPI_STAT_AE BIT(10) /* Abort error flag */
|
||||
+#define LTQ_SPI_STAT_RE BIT(9) /* Receive error flag */
|
||||
+#define LTQ_SPI_STAT_TE BIT(8) /* Transmit error flag */
|
||||
+#define LTQ_SPI_STAT_ME BIT(7) /* Mode error flag */
|
||||
+#define LTQ_SPI_STAT_MS BIT(1) /* Master/slave select bit */
|
||||
+#define LTQ_SPI_STAT_EN BIT(0) /* Enable bit */
|
||||
+#define LTQ_SPI_STAT_ERRORS (LTQ_SPI_STAT_ME | LTQ_SPI_STAT_TE | \
|
||||
+ LTQ_SPI_STAT_RE | LTQ_SPI_STAT_AE | \
|
||||
+ LTQ_SPI_STAT_TUE | LTQ_SPI_STAT_RUE)
|
||||
+
|
||||
+#define LTQ_SPI_WHBSTATE_SETTUE BIT(15) /* Set transmit underflow error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_SETAE BIT(14) /* Set abort error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_SETRE BIT(13) /* Set receive error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_SETTE BIT(12) /* Set transmit error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_CLRTUE BIT(11) /* Clear transmit underflow error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_CLRAE BIT(10) /* Clear abort error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_CLRRE BIT(9) /* Clear receive error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_CLRTE BIT(8) /* Clear transmit error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_SETME BIT(7) /* Set mode error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_CLRME BIT(6) /* Clear mode error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_SETRUE BIT(5) /* Set receive underflow error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_CLRRUE BIT(4) /* Clear receive underflow error flag */
|
||||
+#define LTQ_SPI_WHBSTATE_SETMS BIT(3) /* Set master select bit */
|
||||
+#define LTQ_SPI_WHBSTATE_CLRMS BIT(2) /* Clear master select bit */
|
||||
+#define LTQ_SPI_WHBSTATE_SETEN BIT(1) /* Set enable bit (operational mode) */
|
||||
+#define LTQ_SPI_WHBSTATE_CLREN BIT(0) /* Clear enable bit (config mode */
|
||||
+#define LTQ_SPI_WHBSTATE_CLR_ERRORS (LTQ_SPI_WHBSTATE_CLRRUE | \
|
||||
+ LTQ_SPI_WHBSTATE_CLRME | \
|
||||
+ LTQ_SPI_WHBSTATE_CLRTE | \
|
||||
+ LTQ_SPI_WHBSTATE_CLRRE | \
|
||||
+ LTQ_SPI_WHBSTATE_CLRAE | \
|
||||
+ LTQ_SPI_WHBSTATE_CLRTUE)
|
||||
+
|
||||
+#define LTQ_SPI_RXFCON_RXFITL_S 8 /* FIFO interrupt trigger level */
|
||||
+#define LTQ_SPI_RXFCON_RXFITL_M (0x3F << LTQ_SPI_RXFCON_RXFITL_S)
|
||||
+#define LTQ_SPI_RXFCON_RXFLU BIT(1) /* FIFO flush */
|
||||
+#define LTQ_SPI_RXFCON_RXFEN BIT(0) /* FIFO enable */
|
||||
+
|
||||
+#define LTQ_SPI_TXFCON_TXFITL_S 8 /* FIFO interrupt trigger level */
|
||||
+#define LTQ_SPI_TXFCON_TXFITL_M (0x3F << LTQ_SPI_TXFCON_TXFITL_S)
|
||||
+#define LTQ_SPI_TXFCON_TXFLU BIT(1) /* FIFO flush */
|
||||
+#define LTQ_SPI_TXFCON_TXFEN BIT(0) /* FIFO enable */
|
||||
+
|
||||
+#define LTQ_SPI_FSTAT_RXFFL_S 0
|
||||
+#define LTQ_SPI_FSTAT_RXFFL_M (0x3f << LTQ_SPI_FSTAT_RXFFL_S)
|
||||
+#define LTQ_SPI_FSTAT_TXFFL_S 8
|
||||
+#define LTQ_SPI_FSTAT_TXFFL_M (0x3f << LTQ_SPI_FSTAT_TXFFL_S)
|
||||
+
|
||||
+#define LTQ_SPI_GPOCON_ISCSBN_S 8
|
||||
+#define LTQ_SPI_GPOCON_INVOUTN_S 0
|
||||
+
|
||||
+#define LTQ_SPI_FGPO_SETOUTN_S 8
|
||||
+#define LTQ_SPI_FGPO_CLROUTN_S 0
|
||||
+
|
||||
+#define LTQ_SPI_RXREQ_RXCNT_M 0xFFFF /* Receive count value */
|
||||
+#define LTQ_SPI_RXCNT_TODO_M 0xFFFF /* Recevie to-do value */
|
||||
+
|
||||
+#define LTQ_SPI_IRNEN_TFI BIT(4) /* TX finished interrupt */
|
||||
+#define LTQ_SPI_IRNEN_F BIT(3) /* Frame end interrupt request */
|
||||
+#define LTQ_SPI_IRNEN_E BIT(2) /* Error end interrupt request */
|
||||
+#define LTQ_SPI_IRNEN_T_XWAY BIT(1) /* Transmit end interrupt request */
|
||||
+#define LTQ_SPI_IRNEN_R_XWAY BIT(0) /* Receive end interrupt request */
|
||||
+#define LTQ_SPI_IRNEN_R_XRX BIT(1) /* Transmit end interrupt request */
|
||||
+#define LTQ_SPI_IRNEN_T_XRX BIT(0) /* Receive end interrupt request */
|
||||
+#define LTQ_SPI_IRNEN_ALL 0x1F
|
||||
|
||||
struct lantiq_ssc_hwcfg {
|
||||
unsigned int irnen_r;
|
||||
@@ -208,16 +212,16 @@ static void lantiq_ssc_maskl(const struc
|
||||
|
||||
static unsigned int tx_fifo_level(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- u32 fstat = lantiq_ssc_readl(spi, SPI_FSTAT);
|
||||
+ u32 fstat = lantiq_ssc_readl(spi, LTQ_SPI_FSTAT);
|
||||
|
||||
- return (fstat & SPI_FSTAT_TXFFL_M) >> SPI_FSTAT_TXFFL_S;
|
||||
+ return (fstat & LTQ_SPI_FSTAT_TXFFL_M) >> LTQ_SPI_FSTAT_TXFFL_S;
|
||||
}
|
||||
|
||||
static unsigned int rx_fifo_level(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- u32 fstat = lantiq_ssc_readl(spi, SPI_FSTAT);
|
||||
+ u32 fstat = lantiq_ssc_readl(spi, LTQ_SPI_FSTAT);
|
||||
|
||||
- return fstat & SPI_FSTAT_RXFFL_M;
|
||||
+ return fstat & LTQ_SPI_FSTAT_RXFFL_M;
|
||||
}
|
||||
|
||||
static unsigned int tx_fifo_free(const struct lantiq_ssc_spi *spi)
|
||||
@@ -227,38 +231,38 @@ static unsigned int tx_fifo_free(const s
|
||||
|
||||
static void rx_fifo_reset(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- u32 val = spi->rx_fifo_size << SPI_RXFCON_RXFITL_S;
|
||||
+ u32 val = spi->rx_fifo_size << LTQ_SPI_RXFCON_RXFITL_S;
|
||||
|
||||
- val |= SPI_RXFCON_RXFEN | SPI_RXFCON_RXFLU;
|
||||
- lantiq_ssc_writel(spi, val, SPI_RXFCON);
|
||||
+ val |= LTQ_SPI_RXFCON_RXFEN | LTQ_SPI_RXFCON_RXFLU;
|
||||
+ lantiq_ssc_writel(spi, val, LTQ_SPI_RXFCON);
|
||||
}
|
||||
|
||||
static void tx_fifo_reset(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- u32 val = 1 << SPI_TXFCON_TXFITL_S;
|
||||
+ u32 val = 1 << LTQ_SPI_TXFCON_TXFITL_S;
|
||||
|
||||
- val |= SPI_TXFCON_TXFEN | SPI_TXFCON_TXFLU;
|
||||
- lantiq_ssc_writel(spi, val, SPI_TXFCON);
|
||||
+ val |= LTQ_SPI_TXFCON_TXFEN | LTQ_SPI_TXFCON_TXFLU;
|
||||
+ lantiq_ssc_writel(spi, val, LTQ_SPI_TXFCON);
|
||||
}
|
||||
|
||||
static void rx_fifo_flush(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- lantiq_ssc_maskl(spi, 0, SPI_RXFCON_RXFLU, SPI_RXFCON);
|
||||
+ lantiq_ssc_maskl(spi, 0, LTQ_SPI_RXFCON_RXFLU, LTQ_SPI_RXFCON);
|
||||
}
|
||||
|
||||
static void tx_fifo_flush(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- lantiq_ssc_maskl(spi, 0, SPI_TXFCON_TXFLU, SPI_TXFCON);
|
||||
+ lantiq_ssc_maskl(spi, 0, LTQ_SPI_TXFCON_TXFLU, LTQ_SPI_TXFCON);
|
||||
}
|
||||
|
||||
static void hw_enter_config_mode(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- lantiq_ssc_writel(spi, SPI_WHBSTATE_CLREN, SPI_WHBSTATE);
|
||||
+ lantiq_ssc_writel(spi, LTQ_SPI_WHBSTATE_CLREN, LTQ_SPI_WHBSTATE);
|
||||
}
|
||||
|
||||
static void hw_enter_active_mode(const struct lantiq_ssc_spi *spi)
|
||||
{
|
||||
- lantiq_ssc_writel(spi, SPI_WHBSTATE_SETEN, SPI_WHBSTATE);
|
||||
+ lantiq_ssc_writel(spi, LTQ_SPI_WHBSTATE_SETEN, LTQ_SPI_WHBSTATE);
|
||||
}
|
||||
|
||||
static void hw_setup_speed_hz(const struct lantiq_ssc_spi *spi,
|
||||
@@ -287,7 +291,7 @@ static void hw_setup_speed_hz(const stru
|
||||
dev_dbg(spi->dev, "spi_clk %u, max_speed_hz %u, brt %u\n",
|
||||
spi_clk, max_speed_hz, brt);
|
||||
|
||||
- lantiq_ssc_writel(spi, brt, SPI_BRT);
|
||||
+ lantiq_ssc_writel(spi, brt, LTQ_SPI_BRT);
|
||||
}
|
||||
|
||||
static void hw_setup_bits_per_word(const struct lantiq_ssc_spi *spi,
|
||||
@@ -296,9 +300,9 @@ static void hw_setup_bits_per_word(const
|
||||
u32 bm;
|
||||
|
||||
/* CON.BM value = bits_per_word - 1 */
|
||||
- bm = (bits_per_word - 1) << SPI_CON_BM_S;
|
||||
+ bm = (bits_per_word - 1) << LTQ_SPI_CON_BM_S;
|
||||
|
||||
- lantiq_ssc_maskl(spi, SPI_CON_BM_M, bm, SPI_CON);
|
||||
+ lantiq_ssc_maskl(spi, LTQ_SPI_CON_BM_M, bm, LTQ_SPI_CON);
|
||||
}
|
||||
|
||||
static void hw_setup_clock_mode(const struct lantiq_ssc_spi *spi,
|
||||
@@ -315,28 +319,28 @@ static void hw_setup_clock_mode(const st
|
||||
* 3 1 1 1 0
|
||||
*/
|
||||
if (mode & SPI_CPHA)
|
||||
- con_clr |= SPI_CON_PH;
|
||||
+ con_clr |= LTQ_SPI_CON_PH;
|
||||
else
|
||||
- con_set |= SPI_CON_PH;
|
||||
+ con_set |= LTQ_SPI_CON_PH;
|
||||
|
||||
if (mode & SPI_CPOL)
|
||||
- con_set |= SPI_CON_PO | SPI_CON_IDLE;
|
||||
+ con_set |= LTQ_SPI_CON_PO | LTQ_SPI_CON_IDLE;
|
||||
else
|
||||
- con_clr |= SPI_CON_PO | SPI_CON_IDLE;
|
||||
+ con_clr |= LTQ_SPI_CON_PO | LTQ_SPI_CON_IDLE;
|
||||
|
||||
/* Set heading control */
|
||||
if (mode & SPI_LSB_FIRST)
|
||||
- con_clr |= SPI_CON_HB;
|
||||
+ con_clr |= LTQ_SPI_CON_HB;
|
||||
else
|
||||
- con_set |= SPI_CON_HB;
|
||||
+ con_set |= LTQ_SPI_CON_HB;
|
||||
|
||||
/* Set loopback mode */
|
||||
if (mode & SPI_LOOP)
|
||||
- con_set |= SPI_CON_LB;
|
||||
+ con_set |= LTQ_SPI_CON_LB;
|
||||
else
|
||||
- con_clr |= SPI_CON_LB;
|
||||
+ con_clr |= LTQ_SPI_CON_LB;
|
||||
|
||||
- lantiq_ssc_maskl(spi, con_clr, con_set, SPI_CON);
|
||||
+ lantiq_ssc_maskl(spi, con_clr, con_set, LTQ_SPI_CON);
|
||||
}
|
||||
|
||||
static void lantiq_ssc_hw_init(const struct lantiq_ssc_spi *spi)
|
||||
@@ -347,37 +351,39 @@ static void lantiq_ssc_hw_init(const str
|
||||
* Set clock divider for run mode to 1 to
|
||||
* run at same frequency as FPI bus
|
||||
*/
|
||||
- lantiq_ssc_writel(spi, 1 << SPI_CLC_RMC_S, SPI_CLC);
|
||||
+ lantiq_ssc_writel(spi, 1 << LTQ_SPI_CLC_RMC_S, LTQ_SPI_CLC);
|
||||
|
||||
/* Put controller into config mode */
|
||||
hw_enter_config_mode(spi);
|
||||
|
||||
/* Clear error flags */
|
||||
- lantiq_ssc_maskl(spi, 0, SPI_WHBSTATE_CLR_ERRORS, SPI_WHBSTATE);
|
||||
+ lantiq_ssc_maskl(spi, 0, LTQ_SPI_WHBSTATE_CLR_ERRORS, LTQ_SPI_WHBSTATE);
|
||||
|
||||
/* Enable error checking, disable TX/RX */
|
||||
- lantiq_ssc_writel(spi, SPI_CON_RUEN | SPI_CON_AEN | SPI_CON_TEN |
|
||||
- SPI_CON_REN | SPI_CON_TXOFF | SPI_CON_RXOFF, SPI_CON);
|
||||
+ lantiq_ssc_writel(spi, LTQ_SPI_CON_RUEN | LTQ_SPI_CON_AEN |
|
||||
+ LTQ_SPI_CON_TEN | LTQ_SPI_CON_REN | LTQ_SPI_CON_TXOFF |
|
||||
+ LTQ_SPI_CON_RXOFF, LTQ_SPI_CON);
|
||||
|
||||
/* Setup default SPI mode */
|
||||
hw_setup_bits_per_word(spi, spi->bits_per_word);
|
||||
hw_setup_clock_mode(spi, SPI_MODE_0);
|
||||
|
||||
/* Enable master mode and clear error flags */
|
||||
- lantiq_ssc_writel(spi, SPI_WHBSTATE_SETMS | SPI_WHBSTATE_CLR_ERRORS,
|
||||
- SPI_WHBSTATE);
|
||||
+ lantiq_ssc_writel(spi, LTQ_SPI_WHBSTATE_SETMS |
|
||||
+ LTQ_SPI_WHBSTATE_CLR_ERRORS,
|
||||
+ LTQ_SPI_WHBSTATE);
|
||||
|
||||
/* Reset GPIO/CS registers */
|
||||
- lantiq_ssc_writel(spi, 0, SPI_GPOCON);
|
||||
- lantiq_ssc_writel(spi, 0xFF00, SPI_FPGO);
|
||||
+ lantiq_ssc_writel(spi, 0, LTQ_SPI_GPOCON);
|
||||
+ lantiq_ssc_writel(spi, 0xFF00, LTQ_SPI_FPGO);
|
||||
|
||||
/* Enable and flush FIFOs */
|
||||
rx_fifo_reset(spi);
|
||||
tx_fifo_reset(spi);
|
||||
|
||||
/* Enable interrupts */
|
||||
- lantiq_ssc_writel(spi, hwcfg->irnen_t | hwcfg->irnen_r | SPI_IRNEN_E,
|
||||
- SPI_IRNEN);
|
||||
+ lantiq_ssc_writel(spi, hwcfg->irnen_t | hwcfg->irnen_r |
|
||||
+ LTQ_SPI_IRNEN_E, LTQ_SPI_IRNEN);
|
||||
}
|
||||
|
||||
static int lantiq_ssc_setup(struct spi_device *spidev)
|
||||
@@ -400,13 +406,13 @@ static int lantiq_ssc_setup(struct spi_d
|
||||
}
|
||||
|
||||
/* set GPO pin to CS mode */
|
||||
- gpocon = 1 << ((cs - spi->base_cs) + SPI_GPOCON_ISCSBN_S);
|
||||
+ gpocon = 1 << ((cs - spi->base_cs) + LTQ_SPI_GPOCON_ISCSBN_S);
|
||||
|
||||
/* invert GPO pin */
|
||||
if (spidev->mode & SPI_CS_HIGH)
|
||||
gpocon |= 1 << (cs - spi->base_cs);
|
||||
|
||||
- lantiq_ssc_maskl(spi, 0, gpocon, SPI_GPOCON);
|
||||
+ lantiq_ssc_maskl(spi, 0, gpocon, LTQ_SPI_GPOCON);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -442,18 +448,18 @@ static void hw_setup_transfer(struct lan
|
||||
}
|
||||
|
||||
/* Configure transmitter and receiver */
|
||||
- con = lantiq_ssc_readl(spi, SPI_CON);
|
||||
+ con = lantiq_ssc_readl(spi, LTQ_SPI_CON);
|
||||
if (t->tx_buf)
|
||||
- con &= ~SPI_CON_TXOFF;
|
||||
+ con &= ~LTQ_SPI_CON_TXOFF;
|
||||
else
|
||||
- con |= SPI_CON_TXOFF;
|
||||
+ con |= LTQ_SPI_CON_TXOFF;
|
||||
|
||||
if (t->rx_buf)
|
||||
- con &= ~SPI_CON_RXOFF;
|
||||
+ con &= ~LTQ_SPI_CON_RXOFF;
|
||||
else
|
||||
- con |= SPI_CON_RXOFF;
|
||||
+ con |= LTQ_SPI_CON_RXOFF;
|
||||
|
||||
- lantiq_ssc_writel(spi, con, SPI_CON);
|
||||
+ lantiq_ssc_writel(spi, con, LTQ_SPI_CON);
|
||||
}
|
||||
|
||||
static int lantiq_ssc_unprepare_message(struct spi_master *master,
|
||||
@@ -464,7 +470,8 @@ static int lantiq_ssc_unprepare_message(
|
||||
flush_workqueue(spi->wq);
|
||||
|
||||
/* Disable transmitter and receiver while idle */
|
||||
- lantiq_ssc_maskl(spi, 0, SPI_CON_TXOFF | SPI_CON_RXOFF, SPI_CON);
|
||||
+ lantiq_ssc_maskl(spi, 0, LTQ_SPI_CON_TXOFF | LTQ_SPI_CON_RXOFF,
|
||||
+ LTQ_SPI_CON);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -503,7 +510,7 @@ static void tx_fifo_write(struct lantiq_
|
||||
break;
|
||||
}
|
||||
|
||||
- lantiq_ssc_writel(spi, data, SPI_TB);
|
||||
+ lantiq_ssc_writel(spi, data, LTQ_SPI_TB);
|
||||
tx_free--;
|
||||
}
|
||||
}
|
||||
@@ -517,7 +524,7 @@ static void rx_fifo_read_full_duplex(str
|
||||
unsigned int rx_fill = rx_fifo_level(spi);
|
||||
|
||||
while (rx_fill) {
|
||||
- data = lantiq_ssc_readl(spi, SPI_RB);
|
||||
+ data = lantiq_ssc_readl(spi, LTQ_SPI_RB);
|
||||
|
||||
switch (spi->bits_per_word) {
|
||||
case 2 ... 8:
|
||||
@@ -563,9 +570,9 @@ static void rx_fifo_read_half_duplex(str
|
||||
*/
|
||||
while (rx_fill) {
|
||||
if (spi->rx_todo < 4) {
|
||||
- rxbv = (lantiq_ssc_readl(spi, SPI_STAT) &
|
||||
- SPI_STAT_RXBV_M) >> SPI_STAT_RXBV_S;
|
||||
- data = lantiq_ssc_readl(spi, SPI_RB);
|
||||
+ rxbv = (lantiq_ssc_readl(spi, LTQ_SPI_STAT) &
|
||||
+ LTQ_SPI_STAT_RXBV_M) >> LTQ_SPI_STAT_RXBV_S;
|
||||
+ data = lantiq_ssc_readl(spi, LTQ_SPI_RB);
|
||||
|
||||
shift = (rxbv - 1) * 8;
|
||||
rx8 = spi->rx;
|
||||
@@ -578,7 +585,7 @@ static void rx_fifo_read_half_duplex(str
|
||||
spi->rx++;
|
||||
}
|
||||
} else {
|
||||
- data = lantiq_ssc_readl(spi, SPI_RB);
|
||||
+ data = lantiq_ssc_readl(spi, LTQ_SPI_RB);
|
||||
rx32 = (u32 *) spi->rx;
|
||||
|
||||
*rx32++ = data;
|
||||
@@ -603,7 +610,7 @@ static void rx_request(struct lantiq_ssc
|
||||
if (rxreq > rxreq_max)
|
||||
rxreq = rxreq_max;
|
||||
|
||||
- lantiq_ssc_writel(spi, rxreq, SPI_RXREQ);
|
||||
+ lantiq_ssc_writel(spi, rxreq, LTQ_SPI_RXREQ);
|
||||
}
|
||||
|
||||
static irqreturn_t lantiq_ssc_xmit_interrupt(int irq, void *data)
|
||||
@@ -642,26 +649,26 @@ completed:
|
||||
static irqreturn_t lantiq_ssc_err_interrupt(int irq, void *data)
|
||||
{
|
||||
struct lantiq_ssc_spi *spi = data;
|
||||
- u32 stat = lantiq_ssc_readl(spi, SPI_STAT);
|
||||
+ u32 stat = lantiq_ssc_readl(spi, LTQ_SPI_STAT);
|
||||
|
||||
- if (!(stat & SPI_STAT_ERRORS))
|
||||
+ if (!(stat & LTQ_SPI_STAT_ERRORS))
|
||||
return IRQ_NONE;
|
||||
|
||||
- if (stat & SPI_STAT_RUE)
|
||||
+ if (stat & LTQ_SPI_STAT_RUE)
|
||||
dev_err(spi->dev, "receive underflow error\n");
|
||||
- if (stat & SPI_STAT_TUE)
|
||||
+ if (stat & LTQ_SPI_STAT_TUE)
|
||||
dev_err(spi->dev, "transmit underflow error\n");
|
||||
- if (stat & SPI_STAT_AE)
|
||||
+ if (stat & LTQ_SPI_STAT_AE)
|
||||
dev_err(spi->dev, "abort error\n");
|
||||
- if (stat & SPI_STAT_RE)
|
||||
+ if (stat & LTQ_SPI_STAT_RE)
|
||||
dev_err(spi->dev, "receive overflow error\n");
|
||||
- if (stat & SPI_STAT_TE)
|
||||
+ if (stat & LTQ_SPI_STAT_TE)
|
||||
dev_err(spi->dev, "transmit overflow error\n");
|
||||
- if (stat & SPI_STAT_ME)
|
||||
+ if (stat & LTQ_SPI_STAT_ME)
|
||||
dev_err(spi->dev, "mode error\n");
|
||||
|
||||
/* Clear error flags */
|
||||
- lantiq_ssc_maskl(spi, 0, SPI_WHBSTATE_CLR_ERRORS, SPI_WHBSTATE);
|
||||
+ lantiq_ssc_maskl(spi, 0, LTQ_SPI_WHBSTATE_CLR_ERRORS, LTQ_SPI_WHBSTATE);
|
||||
|
||||
/* set bad status so it can be retried */
|
||||
if (spi->master->cur_msg)
|
||||
@@ -721,9 +728,9 @@ static void lantiq_ssc_bussy_work(struct
|
||||
|
||||
end = jiffies + msecs_to_jiffies(timeout);
|
||||
do {
|
||||
- u32 stat = lantiq_ssc_readl(spi, SPI_STAT);
|
||||
+ u32 stat = lantiq_ssc_readl(spi, LTQ_SPI_STAT);
|
||||
|
||||
- if (!(stat & SPI_STAT_BSY)) {
|
||||
+ if (!(stat & LTQ_SPI_STAT_BSY)) {
|
||||
spi_finalize_current_transfer(spi->master);
|
||||
return;
|
||||
}
|
||||
@@ -755,9 +762,9 @@ static void lantiq_ssc_set_cs(struct spi
|
||||
if (!!(spidev->mode & SPI_CS_HIGH) == enable)
|
||||
fgpo = (1 << (cs - spi->base_cs));
|
||||
else
|
||||
- fgpo = (1 << (cs - spi->base_cs + SPI_FGPO_SETOUTN_S));
|
||||
+ fgpo = (1 << (cs - spi->base_cs + LTQ_SPI_FGPO_SETOUTN_S));
|
||||
|
||||
- lantiq_ssc_writel(spi, fgpo, SPI_FPGO);
|
||||
+ lantiq_ssc_writel(spi, fgpo, LTQ_SPI_FPGO);
|
||||
}
|
||||
|
||||
static int lantiq_ssc_transfer_one(struct spi_master *master,
|
||||
@@ -772,13 +779,13 @@ static int lantiq_ssc_transfer_one(struc
|
||||
}
|
||||
|
||||
static const struct lantiq_ssc_hwcfg lantiq_ssc_xway = {
|
||||
- .irnen_r = SPI_IRNEN_R_XWAY,
|
||||
- .irnen_t = SPI_IRNEN_T_XWAY,
|
||||
+ .irnen_r = LTQ_SPI_IRNEN_R_XWAY,
|
||||
+ .irnen_t = LTQ_SPI_IRNEN_T_XWAY,
|
||||
};
|
||||
|
||||
static const struct lantiq_ssc_hwcfg lantiq_ssc_xrx = {
|
||||
- .irnen_r = SPI_IRNEN_R_XRX,
|
||||
- .irnen_t = SPI_IRNEN_T_XRX,
|
||||
+ .irnen_r = LTQ_SPI_IRNEN_R_XRX,
|
||||
+ .irnen_t = LTQ_SPI_IRNEN_T_XRX,
|
||||
};
|
||||
|
||||
static const struct of_device_id lantiq_ssc_match[] = {
|
||||
@@ -814,21 +821,21 @@ static int lantiq_ssc_probe(struct platf
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
- rx_irq = platform_get_irq_byname(pdev, SPI_RX_IRQ_NAME);
|
||||
+ rx_irq = platform_get_irq_byname(pdev, LTQ_SPI_RX_IRQ_NAME);
|
||||
if (rx_irq < 0) {
|
||||
- dev_err(dev, "failed to get %s\n", SPI_RX_IRQ_NAME);
|
||||
+ dev_err(dev, "failed to get %s\n", LTQ_SPI_RX_IRQ_NAME);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
- tx_irq = platform_get_irq_byname(pdev, SPI_TX_IRQ_NAME);
|
||||
+ tx_irq = platform_get_irq_byname(pdev, LTQ_SPI_TX_IRQ_NAME);
|
||||
if (tx_irq < 0) {
|
||||
- dev_err(dev, "failed to get %s\n", SPI_TX_IRQ_NAME);
|
||||
+ dev_err(dev, "failed to get %s\n", LTQ_SPI_TX_IRQ_NAME);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
- err_irq = platform_get_irq_byname(pdev, SPI_ERR_IRQ_NAME);
|
||||
+ err_irq = platform_get_irq_byname(pdev, LTQ_SPI_ERR_IRQ_NAME);
|
||||
if (err_irq < 0) {
|
||||
- dev_err(dev, "failed to get %s\n", SPI_ERR_IRQ_NAME);
|
||||
+ dev_err(dev, "failed to get %s\n", LTQ_SPI_ERR_IRQ_NAME);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
@@ -849,17 +856,17 @@ static int lantiq_ssc_probe(struct platf
|
||||
}
|
||||
|
||||
err = devm_request_irq(dev, rx_irq, lantiq_ssc_xmit_interrupt,
|
||||
- 0, SPI_RX_IRQ_NAME, spi);
|
||||
+ 0, LTQ_SPI_RX_IRQ_NAME, spi);
|
||||
if (err)
|
||||
goto err_master_put;
|
||||
|
||||
err = devm_request_irq(dev, tx_irq, lantiq_ssc_xmit_interrupt,
|
||||
- 0, SPI_TX_IRQ_NAME, spi);
|
||||
+ 0, LTQ_SPI_TX_IRQ_NAME, spi);
|
||||
if (err)
|
||||
goto err_master_put;
|
||||
|
||||
err = devm_request_irq(dev, err_irq, lantiq_ssc_err_interrupt,
|
||||
- 0, SPI_ERR_IRQ_NAME, spi);
|
||||
+ 0, LTQ_SPI_ERR_IRQ_NAME, spi);
|
||||
if (err)
|
||||
goto err_master_put;
|
||||
|
||||
@@ -916,11 +923,11 @@ static int lantiq_ssc_probe(struct platf
|
||||
}
|
||||
INIT_WORK(&spi->work, lantiq_ssc_bussy_work);
|
||||
|
||||
- id = lantiq_ssc_readl(spi, SPI_ID);
|
||||
- spi->tx_fifo_size = (id & SPI_ID_TXFS_M) >> SPI_ID_TXFS_S;
|
||||
- spi->rx_fifo_size = (id & SPI_ID_RXFS_M) >> SPI_ID_RXFS_S;
|
||||
- supports_dma = (id & SPI_ID_CFG_M) >> SPI_ID_CFG_S;
|
||||
- revision = id & SPI_ID_REV_M;
|
||||
+ id = lantiq_ssc_readl(spi, LTQ_SPI_ID);
|
||||
+ spi->tx_fifo_size = (id & LTQ_SPI_ID_TXFS_M) >> LTQ_SPI_ID_TXFS_S;
|
||||
+ spi->rx_fifo_size = (id & LTQ_SPI_ID_RXFS_M) >> LTQ_SPI_ID_RXFS_S;
|
||||
+ supports_dma = (id & LTQ_SPI_ID_CFG_M) >> LTQ_SPI_ID_CFG_S;
|
||||
+ revision = id & LTQ_SPI_ID_REV_M;
|
||||
|
||||
lantiq_ssc_hw_init(spi);
|
||||
|
||||
@@ -952,8 +959,8 @@ static int lantiq_ssc_remove(struct plat
|
||||
{
|
||||
struct lantiq_ssc_spi *spi = platform_get_drvdata(pdev);
|
||||
|
||||
- lantiq_ssc_writel(spi, 0, SPI_IRNEN);
|
||||
- lantiq_ssc_writel(spi, 0, SPI_CLC);
|
||||
+ lantiq_ssc_writel(spi, 0, LTQ_SPI_IRNEN);
|
||||
+ lantiq_ssc_writel(spi, 0, LTQ_SPI_CLC);
|
||||
rx_fifo_flush(spi);
|
||||
tx_fifo_flush(spi);
|
||||
hw_enter_config_mode(spi);
|
Loading…
Reference in a new issue